Firefox crashes on Startup (IN and OUT of Safe Mode)

Hey. I was messin with some privacy settings in the Options menu. I selected the option for FF to clear all cache, cookies, history and the like on browser close. After finishing that I could not start up FF again.

What error messages are you getting ?
I wonder if it was an old outdated version of Firefox ?
First of all look for running Firefox processes firefox.exe or plugincontainer use the task manager to kill those then after a couple of minutes try again to start Firefox in safe mode.
* See [[Firefox hangs or is not responding - How to fix]]
* [[Troubleshoot Firefox issues using Safe Mode]]
If that fails then re name the ''prefs.js'' file to something else like ''prefs.js.old1'' because that will reset all your preferences to default settings. (If you have a lot of customised settings we can work with the old file to try to reverse just the very recent change that caused the fault, especially if, when you view that file you remember what it was you changed)
* See [[Reset Firefox preferences to troubleshoot and fix problems#w_solution-2-delete-firefox-preference-files]]#w_solution-2-delete-firefox-preference-files

Similar Messages

Firefox crashes at startup, can't open in safe mode either

Problem started yesterday, can't open firefox at all.

We're sorry to hear that your Firefox seems to be crashing when you open it. Please perform the following steps to give us a crash report ID that helps us find out more about the cause of the crash.
#Press the following shortcut to get a Run window: [Windows] + [R]. This should bring up a window that contains a text field.
#In that text field, enter %APPDATA% and press Enter. An explorer window should open.
#From that explorer window, double-click on the ''Mozilla'' folder, then double-click on ''Firefox'' and then on ''Crash reports''. Double-click on ''submitted''.
#Now, you should see a list of files that contain reports. Go to ''View'' > ''Arrange Icons by'' > ''Modified'' to get the most recent files at the top of the window.
#Open the most recent 5 files with a text editor and copy the IDs.
#Paste each ID with '''bp-''' into the reply window on the forums.
Thanks in advance!
You can find more information and troubleshooting steps in the [[Firefox crashes]] article.

Firefox crashes several times a day even in safe mode

Every every day I get a few crashes with Firefox. The scenario is always the same. Attached screenshot. I keep switching Shockwave Flash v11.2.202.451 and the Cisco OpenH264 codec to “never activate” but on restart from the crash they are found to have reactivated. I tried safe mode, and refreshed, with no improvement. I think it is related to video uplaying, youtube etc, but can't pin it down.
My OS is Ubuntu 14.04, Firefox 36.0.1 for Ubuntu.

As for it being out of date, I am sure that while there is a version 16 for Windows, the last version that works for FF on Linux is mine.
Funnily enough i haven't had a single crash today, maybe due to todays Ubuntu update.

Firefox crashes on startup

Here's the deal.
From one day onto the next, out of the blue, Firefox (version 18.0.1) refuses to start up.
I get the crash reporter screen as soon as Firefox tries to start, stating that firefox has crashed.
If I click on "Details" nothing happens.
If I click on "Restart Firefox" I immidiately get the next Crash Reporter screen.
No Windows updates were installed, and no Firefox updates either from what I can tell.
I'm running Windows 7 Pro 64bit with SP1 btw...
So I tried starting firefox in "Windows Compatability mode" using Windows XP SP3.
Now Firefox starts, including all plugins, without any problems.
I can also start firefox in "Safe mode" by holding down the SHIFT key when double-clikcing on the firefox icon.
So while in safe mode, I typed about:crashes in the URL bar witch showed the following:
Submitted Crash Reports
<pre><nowiki>bp-26e20406-2344-4d8a-8573-1fdf12130130 30-1-2013 16:07
bp-78a3f537-246c-4935-b640-463a42130130 30-1-2013 12:22
bp-59fad0f4-2f6f-474f-9728-3c8222130130 30-1-2013 12:22
bp-b7a55e47-00f5-4b3a-baff-5e6502130130 30-1-2013 12:19
bp-22f0a628-9181-40b3-a6fd-29a3e2130130 30-1-2013 12:18
161bf996-c6e4-4bb3-aae1-be96d5fbaff8 29-1-2013 19:45
</nowiki></pre>
(in the mean time, I have a whole lot more :( )
So then (still in Firefox safe mode) I went into the Add-ons Manager and uninstalled all Extensions.
Then I disabled all plugins (which btw are all up to date according to Firefox itself):
Java Deployment Toolkit 7.0.110.21 10.11.2.21
Java(TM) Paltform SE 7 U11 10.11.2.21
Adobe Acrobat 11.0.1.36
Shockwave Flash 11.5.205.146
Silverlight Plug-In 5.1.10411.0
VLC Web Plugin 2.0.2.0
Wacom Tablet Plugin 2.1.0.2
Then I closed Firefox, but when trying to start Firefox again in normal mode, it crashed again.
I have also tried uninstalling Firefox completely, then running a registry cleaner to make sure everything was really gone.
Then downloading and installed Firefox 18.0.1 again.
But as soon as it started it crashed again.
I again uninstalled Firefox, ran the reg-cleaner but this time I installed Firefox version 9 (which I still had on a backup drive), but this version too, crashes on startup.
And I had the same with version 15 which I also still had on the backup drive.
But whichever version I install, they all crash at startup unless I start them in compatibility mode or safe mode.
I even uninstalling all the programs which had a plugin embeded in the browser, so there were no plugins left.
And again, uninstalled Firefox and reinstaled it. But still Firefox crashes at startup.
And finally I even updated my graphics drivers and followed this thread:
https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration#os=win7&browser=fx18
Since I've done everything I can think off, I'm at a loss as to what the problem could be.
So if anyone has any idea, please let me know.
I hate to switch browsers, and I don't want to run things in "compatability mode" just to have it working, because it did work before.
in the mean time, here are some more crash reports:
bp-bf8fa5b0-a0a6-48ce-80b9-645792130130 30-1-2013 18:29
bp-f18b9174-5307-41af-be74-aa9972130130 30-1-2013 18:29
bp-ed27ee58-379f-4fa1-a824-6ce352130130 30-1-2013 18:16
bp-f73252bd-c702-4907-8657-95cc02130130 30-1-2013 18:11
bp-47789933-a64c-4f06-b9fd-282002130130 30-1-2013 18:09
bp-266a8f07-21ed-4f5f-bb5a-ba2f32130130 30-1-2013 18:08
bp-6c391ece-ae68-4935-b604-51ddb2130130 30-1-2013 18:08
bp-b25c1252-34f7-4785-b5ae-a8a462130130 30-1-2013 18:06

Just a small update...
I tried running a portable version of Firefox which I had on my USB stick... same problem.
The same goes for my TOR Browser (which uses Firefox too), it too crashes when the embedded Firefox is started.
Both however, have always worked just fine on the same system and still work fine on any other system I have.
---edit---
Well I finished uninstalling and removing everything Firefox related on my system (also ran the reg-cleaner again).
I downloaded and reinstalled Firefox 18, but it still crashes.
I ran it in safe mode, disabled the hardware acceleration, and ran it again in normal mode...
guess what... it works again!
The weird thing is, I already tried disabling the hardware acceleration but it didn't work.
So why it works now? I haven't got a clue.
The other weird thing is... why did this problem occur in the first place... There have been no changes to my system, no updates, nothing.
Ah well, I guess I'll never know. But at least it's working again.
Thanks for the help.

Firefox crashes on startup and we've tried all your solutions but none work

Firefox crashes when I double click the icon. I have gone through all the fixes on the website with no improvement. I am able to get it to open only when I right click and use the run as administrator option. I have reinstalled firefox, changed profiles, and tried safe mode option. All had the same effect firefox crashed on startup. I have run four different malware removal programs and restarted the computer, still crashes. I also ran my antivirus program last night and still crashes. I turned off the firewall and still crashes. I tried also the reset option in troubleshooting options but still crashes. Firefox worked fine till yesterday then java updated and the crashes started occurring, I have also done a system restore to before java updated but still crashes.
here is the crash report information.

Sorry it took so long for me to reply back to you, things around here got crazy with work and home life and I just had a chance this morning to get the crash report.
Here is the latest report ID from the computer.
bp-a06878d0-52f3-417d-b3eb-c0ef52130126 from January 26, 2013
Melanie

Firefox crashes at startup even in safe mode after upgrade to version 7.0.1

Firefox crashes at startup after an upgrade to version 7.0.1
It crashes on start-up even in safe mode.
I have tried a complete un-install and reinstall but choose to keep all my settings (eg bookmarks) etc as I don't want to loose my bookmarks.

Your crashreport is 
https://crash-stats.mozilla.com/report/index/bp-24b848e4-7d2a-4cf1-b0b0-31ccd2111021 
Firefox 7.0.1 Crash Report [@ mozcomp.dll@0xab51 ] 
Startup crash in mozcomp.dll with Oracle Enterprise, F5 Networks, Passlogix V-GO, IBM Tivoli Access Manager SSO 
See related Bug [https://bugzilla.mozilla.org/show_bug.cgi?id=680927 680927] for more info 
The likely problem is use of certain Oracle etc software, the developer Oracle being aware of the problem and working on a fix. Meanwhile there is a registry hack as a potential workaround, or the simpler workaround of downgrading temporarily to firefox 3.6.23.

Firefox crashes before startup

Firefox crashes before startup. I can't open it long enough to get to safe mode. I have uninstalled and reinstalled four times, three of which were after a reboot. I'm running Windows 7, 32 bit. Crash IDs:
bp-e7279bca-af60-4511-97d8-8ac6e2141211
bp-28c95e65-0481-4501-9b85-170152141211
bp-98fab328-69b9-47cc-ac4c-afeb32141211
bp-0447c2fc-f0df-4b6b-926f-f7ddb2141211
bp-ca40873c-5060-4a7d-9398-6a56c2141211
bp-1eef7770-e609-44fa-ad1d-5dae82141211
bp-c9641eef-7652-4d17-a870-010b42141211
bp-b05d1737-8c5b-435e-8e23-7a37e2141211
bp-6e5c80eb-b737-40d2-922e-100622141211

hello trempls, thanks for posting with your crash report ids! they show that these crashes are caused by malware (datamangr.dll) on the system, so please run a scan with different security tools like the [http://www.malwarebytes.org/products/malwarebytes_free free version of malwarebytes], [http://www.bleepingcomputer.com/download/adwcleaner/ adwcleaner] & [http://www.microsoft.com/security/scanner/default.aspx microsoft safety scanner].
[[Troubleshoot Firefox issues caused by malware]]

Firefox crashes on startup. Won't start in FF safe, but will in windows safemode

Firefox crashes on startup. Looked for malware but found none. Here are last reports:
bp-46117be8-69be-42f0-b123-c3b622130201
bp-7382ac7d-b8fb-4be9-a806-c06702130201
bp-e34591af-4220-45ca-8ec0-c44682130131
bp-4af89cb1-a5cd-4c72-a8e1-e1eb12130131
bp-b264cf8b-4ddf-42a8-a6a0-85ba42130131

hello, this crash is caused by Websense Endpoint security software that is running on the system. please try to install all the updates for this program that are available...

Firefox crashes when I try and download a pdf. eMac 10.4 1.25 GHz PPC G4

when on a site and one can download a pdf, firefox crashes.

This happens often and never works. It did work on 10.39 but not on 10.4

How can I get my system in and out of DOS mode?

How do I get my system in and out of DOS mode?

There is no "Dos-Mode" in OSX.
Guessing that you tried to run an .exe file while in OSX ?
These are meant to be run in Windows.
Stefan

Updated. See 3 new Qs at bottom...After XP system restore back to earlier FF version, FF won't open, it's in safe mode. How can it be opened out of safe mode? Can precious, previous History be retreived?

THIS IS A RE-POST OF THE QUESTIONS previously posted, PREVIOUSLY POSTED, now adding a request that 3 new summary questions--at the bottom--be answered.
NOTE: I specifically need answers to the 3 new, summary Qs now posted at the bottom of the Sequence of Events:
Sequence of events:
1) I was using Version 3.6.22 and I needed to
upgrade to Version 6.0.
2) Before beginning, I set a restore point in Windows XP so that in case I did not like 6.0, I could go back to the restore point which contained
3.6.22 and I would stick with that version.
3) I did not uninstall 3.6.22 but loaded 6.0 on top of it, so to speak, thinking that would save my history and other features such as bookmarks. Opening 6.0 I was horrified to see it did not contain my history files!...so I had to go back to 3.6.22.
4) After returning back to the restore point that contained 3.6.22, on the desktop, clicking on the Firefox icon, it won't open.
5) I went to desktop, in lower left clicked Start, then clicked Programs, and yes Firefox is there as an installed program, however the tag reads Mozilla Firefox (safe mode)...so it's in safe mode and won't
open. What now?---~~~~~(end of original post).
HERE ARE THE EXACT 3 Qs I need answered:
1) Can I retreive and save MY PRECIOUS HISTORY from somewhere? Can I force new 6.0 to find and retreive it from 3.6.22) And how would I do that? That's the reason I'm trying to go back to 3.6.22, because it likely still contains my history which does not appear in new install of 6.0?
2) As it stands, go back to previous state now has Firefox 3.6.22 in safe mode. It won't open after XP went back to previous state containing 3.6.22. File tree says Firefox is installed but is now in safe mode. So Q2 is: Can I open Firefox out of safe mode and if so how?--I'd be done because it likely still contains my history.
And if not, can I get retreive my history from it somehow? Or somehow get 6.0 to rediscover it hidden somewhere (Show All History in new 6.0 install was empty).
3) Do I have to give up on retreiving my history even though it's got to be somewhere in my computer? I did not uninstall anything.
If my history cannot be retreived, then I have no choice but to proceed in life with 6.0 without my precious History, a huge store of info and loss of data for me, big time!
FIREFOX HELP NEEDS TO TELL PEOPLE HOW TO SAVE THEIR HISTORY WHEN THEY UPGRADE TO NEW VERSION and whether or not to uninstall previous FF version first. Please pass this urgent advice on to Firefox techs. I can't even figure out how to email THEM!!!!
Thank you all out there in cyberspace whereever you may be!
(P.S. Cor el, thanks for your reply...how do I reach you by email link does not work....)

What in particular didn't you like about Firefox 6?
You can undo a lot of changes, either via changing settings or prefs on the about:config page or via extensions.
*https://support.mozilla.com/kb/common-questions-after-updating-firefox
Do a clean reinstall of the version that you want to use.
Download a fresh Firefox copy and save the file to the desktop.
*Firefox 3.6.x: http://www.mozilla.com/en-US/firefox/all-older.html
*Firefox 6.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Uninstall your current Firefox version.
* Do not remove personal data when you uninstall the current version or you lose your bookmarks and other data in the profile folder.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
* It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.
* http://kb.mozillazine.org/Profile_folder_-_Firefox
* http://kb.mozillazine.org/Profile_backup

Only boots into safe mode (What exactly is left out in safe mode?)

my PBG4 hangs on a blank blue screen when i boot it, this happens on fresh (HD wiped) installs of both Tiger and Leopard. It boots fine from a dvd and while in safe mode.
i want to try to track down what exactly is causing the hang, i guess it is a hardware problem that only presents itself when all the stock drivers from apple are installed. is there a list somewhere of what is left out of a safe mode boot?

Hi slee!
"...this happens on fresh (HD wiped) installs of both Tiger and Leopard."
Do you mean that, you did an Erase & Install of Tiger 10.4.x, and the PowerBook G4, won't successfully startup, and the same, if you do an Erase & Install of Leopard 10.5.x?
Have you successfully installed either of those versions on the PB G4 before?
Are you using a Full Retail Version, of the Tiger Install DVD, and a Full Retail Version Of Leopard.
Or are you using a Model Specific DVD, from another model of Mac?
If this is the type of disc, then that may explain the unsuccessful installation.
The discs should look exactly like the images in the above links, and not say Upgrade, CPU Drop-in DVD, or "This software is part of a hardware bundle purchase - not to be sold seperately." on them.
ali b

I wanted to trouble shoot, put comupter in safe mode , now its stuck , closed FF 3 times, re-started computer, still in safe mode.how do i get out of safe mode

i wanted to do trouble shooting, i put computer in safe mode & now i can not get out of safe mode. I've closed FF & re-started computer 3 times, even shut down computer, still in safe mode. What do i need to do to get out of safe mode?

Hi,
Please see this article: [[Firefox is stuck in Safe Mode]]
I hope that helps. Post back if not.
--Edward
EDIT: Just noticed that you already rebooted. You say that you "put computer in safe mode". Is firefox in safe mode or your whole computer?
If '''Firefox''' is stuck in safe mode despite reboot
* Check that the shift keys on your keyboard are not stuck down.
* Uninstall firefox and install again (your settings will not be lost as they are stored in your profile folder).
Let me know if neither of those works.

Videos have stopped playing on all sites, just get black screen. Clearing cache and cookies and restart in safe mode does not fix.

Clearing cache and cookies and restart in safe mode does not fix.

Hi castaway, you are using a old version of firefox . Please update it . goto '''Help->About Firefox''' and it will be automatically updated.

How to get out of Safe Mode?

Hi,
I started up in safe mode and was able to trouble shoot a peripheral problem. However, I still have a HD icon on my desktop. How do I get out of Safe mode? I did restart a couple of times but the icon continues to appear.
Thanks!
S

If you have rebooted, then you are no longer in safe mode. The HD icon is not an indicator of being in safe mode. If you don't want to see hard drive icons on the Desktop, you can set that preference in Finder -> Finder menu -> Preferences -> General.

Firefox crashes on Startup (IN and OUT of Safe Mode)

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